Live Tank Circuit Breakers Routine testing
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1 Live Tank Circuit Breakers Routine testing
2 Routine tests Live tank circuit breakers 2 ABB Live tank circuit breaker routine testing
3 All circuit breakers are tested ABB has a well established process to ensure on-time delivery of circuit breakers to its customers with the highest level of quality and reliability. At the live tank circuit breaker production facility in Ludvika, over 3000 circuit breakers are manufactured and routine tested annually. The routine tests are performed for the purpose of ensuring the quality and guaranteed performance of the material, design and assembly of the circuit breaker and are made on each apparatus manufactured. We welcome customer witnessing of these tests. The routine tests are part of the process of producing the circuit breakers and are always performed with the same test procedures, irrespective whether or not the tests are witnessed by the client s representative. Performance of routine tests The main steps of the order process related to routine testing are described in the example timeline shown below. The exact timing of these steps may vary depending on the size and complexity of the order. An invitation to witness routine testing is part of the order acknowledgement, when planned dates for routine testing and shipping are given. Confirmation is sent to the customer normally six weeks before the planned routine test dates. When the final dates have been advised, participation of any inspector(s) shall be confirmed by the customer at least three weeks before the planned dates for routine tests. Any requests for special or additional test procedures shall always be advised well in advance, preferably with order placement, but at the latest with the confirmation of witnessing participation. It must be noted that any requested changes to the test process or the planned date for routine testing will affect the deli very time. Week Activities 1 Order received from customer 2 Order acknowledgement sent by ABB with preliminary date for routine testing Order design work complete. Drawings sent for customer approval. After customer design approval, materials purchased for circuit breaker X-7 ABB confirms date for routine tests and requests confirmation of customer intention to witness testing X-4 Customer confirms intention to witness or not X-2 Circuit breaker assembly work X-1 Routine testing done X Circuit breaker packed and shipped ex-works Delivery time = "X" weeks, ex-works After each routine test, a test review meeting is held together with the client's witness in order to summarize the tests, documentations and for resolving any questions which may have arisen during tests. For each circuit breaker a complete routine test report, approved and certified by an ABB test supervisor, is issued and distributed to the customer as part of the order documentation. ABB Live tank circuit breaker routine testing 3
4 Production process Goods receiving Materials and components for circuit breaker assembly are inspected on arrival and before use for compliance to ABB requirements. Many items are also routine tested in advance by the suppliers in accordance with ABB instructions, the documentation for which can be shown on request. Breaker pole, Mechanical and Electrical assembling Tests are also conducted on major modules of the circuit breaker during the factory assembly process, prior to the final routine testing of the complete circuit breaker poles and operating mechanism(s). Routine test The final routine test process is described further on pages 6 and 7. Packing After completion of routine testing the circuit breaker is disassembled into its shipping modules for packing. Delivery to customer After packing the circuit breaker is shipped to the customer according to agreed order requirements. Any non-compliant components are clearly marked and isolated from production for further analysis. 4 ABB Live tank circuit breaker routine testing
5 Manufacturing Interrupters Breaker pole assembly Goods recieving Operating mechanism Mechanism assembly Routine test Packing Delivery to customer Operating mechanism Electrical assembly ABB Live tank circuit breaker routine testing 5
6 Routine test process Summary of routine tests IEC ANSI/IEEE ABB Nameplate and design check X X X Resistance measurement X X X (Components in auxiliary and control circuits) Function check of auxiliary and control circuits X X X Mechanical operating test X X X Resistance measurement (Main circuit) X X X Dielectric test (Auxiliary and control circuits) N/A X X Dielectric test (Main circuit) X X X Tightness test X X X Delivery time = "X" weeks, ex-works Meeting the standards Routine testing of ABB circuit breakers is a tightly controlled part of our quality production process. All testing follows the protocols strictly, and is highly automated to ensure accuracy of the applied test levels and result measurements, in accordance with international standards. The main routine test steps with respect to IEC, ANSI and ABB standards are summarized in the table on this page. A more detailed description of these steps can be provided on request. 6 ABB Live tank circuit breaker routine testing
7 Minutes Activities completed 0 Start of routine test 10 Nameplate and design check 40 Function check of auxiliary and control circuits 60 Operating mechanism adjustment tests 90 Mechanical operating test 100 Motor and closing spring charging tests 115 Resistance measurement (Main circuit) 125 Dielectric test (Auxiliary and control circuits) 155 Overpressure test, tightness test 175 Dielectric test (Main circuit) 180 Transfer to packing department The entire process is normally completed within approximately 3 hours per three pole operated breaker. The routine test report is automatically generated from the computerized test system and can be reviewed in full by the customer witness shortly after test completion. Workflow To ensure timely production flow and maintain on-time delivery commitments for all customers, the routine test process is planned to follow a strict time schedule. The timing of the routine test process for a three-pole operated breaker (or one phase of a single pole operated breaker) is summarized in the timeline on this page. The entire routine test for each circuit breaker is documented in a detailed routine test report, generated by the computerized testing system. After verification by the ABB certified test supervisor, this report is provided to the customer as part of the order documentation. ABB Live tank circuit breaker routine testing 7
8 Contact us ABB AB High Voltage Products SE Ludvika, Sweden Phone: +46(0) Fax: +46(0) Copyright 2013 ABB All rights reserved NOTE! ABB AB is working continuously to improve the products. We therefore reserve the right to change designs, dimensions and data without prior notice. Publication Live tank circuit breaker routine testing 1HSM en, Edition 3, , High Voltage Products, Photo: Hasse Eriksson.
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